This book is dedicated to one of the most intensively developing areas of household appliances - air conditioning systems. It contains materials on the general principles of operation of air conditioning systems, describes the classification of these devices. The main part of the book is devoted to the description of the equipment of technical means that are necessary for the maintenance and repair of climatic equipment, as well as solving issues on their installation and adjustment. The information is provided in an illustrated form in the form of a step-by-step instruction. Materials describing the technology of pipeline soldering are given, a visual table is given with general approaches to solving various problems arising during the repair of air conditioning systems.